
Difference Engine No. 1
circa 1832
circa 1832
1835
1838
1838
1836
1837
1837
1837
1839
1837
1839
1838
1835
1837
1834
1832
1834
1834
1831
1955; 1830
1893-4
1837
1830
1837
2000-100 BCE
1833
1831
1934
1863-7
1838
1832
1839
1772 (original); 1919 (model)
1839
1839
1839
1990-96
1830
1830-1835
1830
1831
1830 (original); 1967 (model)
1839 (original); circa 1988 (replica)
1833
1775-1799 (original); 1900-1907 (model)
1832
4000-2001 BCE
1930 (replica); 1834 (original)
1705-1737
1835